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/**
* Navit, a modular navigation system.
* Copyright (C) 2005-2018 Navit Team
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* @file traffic_traff_android.c
*
* @brief The TraFF plugin for Android
*
* This plugin receives TraFF feeds via Android broadcasts.
*/
#include <string.h>
#include <time.h>
#ifdef _POSIX_C_SOURCE
#include <sys/types.h>
#endif
#include "glib_slice.h"
#include "config.h"
#include "item.h"
#include "attr.h"
#include "coord.h"
#include "xmlconfig.h"
#include "android.h"
#include "traffic.h"
#include "plugin.h"
#include "callback.h"
#include "debug.h"
/**
* @brief Stores information about the plugin instance.
*/
struct traffic_priv {
struct navit * nav; /**< The navit instance */
struct callback * cbid; /**< The callback function for TraFF feeds **/
jclass NavitTraffClass; /**< The `NavitTraff` class */
jobject NavitTraff; /**< An instance of `NavitTraff` */
};
struct traffic_message ** traffic_traff_android_get_messages(struct traffic_priv * this_);
/**
* @brief Returns an empty traffic report.
*
* @return Always `NULL`
*/
struct traffic_message ** traffic_traff_android_get_messages(struct traffic_priv * this_) {
return NULL;
}
/**
* @brief The methods implemented by this plugin
*/
static struct traffic_methods traffic_traff_android_meth = {
traffic_traff_android_get_messages,
};
/**
* @brief Called when a new TraFF feed is received.
*
* @param this_ Private data for the module instance
* @param feed Feed data in string form
*/
static void traffic_traff_android_on_feed_received(struct traffic_priv * this_, char * feed) {
struct attr * attr;
struct attr_iter * a_iter;
struct traffic * traffic = NULL;
struct traffic_message ** messages;
dbg(lvl_debug, "enter");
attr = g_new0(struct attr, 1);
a_iter = navit_attr_iter_new();
if (navit_get_attr(this_->nav, attr_traffic, attr, a_iter))
traffic = (struct traffic *) attr->u.navit_object;
navit_attr_iter_destroy(a_iter);
g_free(attr);
if (!traffic) {
dbg(lvl_error, "failed to obtain traffic instance");
return;
}
dbg(lvl_debug, "processing traffic feed:\n%s", feed);
messages = traffic_get_messages_from_xml_string(traffic, feed);
if (messages) {
dbg(lvl_debug, "got messages from feed, processing");
traffic_process_messages(traffic, messages);
g_free(messages);
}
}
/**
* @brief Initializes a traff_android plugin
*
* @return True on success, false on failure
*/
static int traffic_traff_android_init(struct traffic_priv * this_) {
jmethodID cid;
if (!android_find_class_global("org/navitproject/navit/NavitTraff", &this_->NavitTraffClass))
return 0;
cid = (*jnienv)->GetMethodID(jnienv, this_->NavitTraffClass, "<init>", "(Landroid/content/Context;I)V");
if (cid == NULL) {
dbg(lvl_error,"no method found");
return 0; /* exception thrown */
}
this_->NavitTraff=(*jnienv)->NewObject(jnienv, this_->NavitTraffClass, cid, android_application,
(int) this_->cbid);
dbg(lvl_debug,"result=%p", this_->NavitTraff);
if (!this_->NavitTraff)
return 0;
if (this_->NavitTraff)
this_->NavitTraff = (*jnienv)->NewGlobalRef(jnienv, this_->NavitTraff);
return 1;
}
/**
* @brief Registers a new traff_android traffic plugin
*
* @param nav The navit instance
* @param meth Receives the traffic methods
* @param attrs The attributes for the map
* @param cbl
*
* @return A pointer to a `traffic_priv` structure for the plugin instance
*/
static struct traffic_priv * traffic_traff_android_new(struct navit *nav, struct traffic_methods *meth,
struct attr **attrs, struct callback_list *cbl) {
struct traffic_priv *ret;
dbg(lvl_debug, "enter");
ret = g_new0(struct traffic_priv, 1);
ret->nav = nav;
ret->cbid = callback_new_1(callback_cast(traffic_traff_android_on_feed_received), ret);
/* TODO populate members, if any */
*meth = traffic_traff_android_meth;
traffic_traff_android_init(ret);
return ret;
}
/**
* @brief Initializes the traffic plugin.
*
* This function is called once on startup.
*/
void plugin_init(void) {
dbg(lvl_debug, "enter");
plugin_register_category_traffic("traff_android", traffic_traff_android_new);
}
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